US7177658B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-media broadcast and multicast service (MBMS) in a wireless communications system
Assignee: Qualcomm Inc
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Filing: 2002-05-06
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Granted: 2007-02-13
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Expires: 2022-05-06
Abstract
Abstract Techniques to implement MBMS services in a wireless communication system. In one aspect, a method is provided for processing data for transmission to a plurality of terminals. Frames of information bits (which may have variable rates) are provided to a buffer implementing a matrix. The matrix is padded with padding bits based on a particular padding scheme to support variable frame rates. The frames are then coded based on a particular block code to provide parity bits. The frame of information bits and the parity bits are then transmitted to the terminals. In another aspect, a method is provided for controlling the transmit power of a data transmission to a plurality of terminals. In accordance with the method, TPC streams are received from the terminals and processed to obtain a stream of joint power control commands used to adjust the transmit power of the data transmission.
Inventors
- 👤 Serge Willenegger
- 👤 Tao Chen
- 👤 Alkinoos Hector Vayanos
- 👤 Yongbin Wei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:43
CPC Classifications
H; H04; H04W; H04W4/00; H04W4/06; H04W52/00; H04W52/04; H04W52/30; H04W52/32; H04W52/322; H03; H03M; H03M13/00; H03M13/27; H03M13/2703; H03M13/2707; H03M13/29; H03M13/2906; H03M13/2909; H03M13/2915; H03M13/37; H03M13/373; H04L; H04L1/00; H04L1/0001; H04L1/0002; H04L1/0015; H04L1/0017; H04L1/0023; H04L1/0026; H04L1/0027; H04L1/004; H04L1/0041; H04L1/0056; H04L1/0057; H04L1/0067; H04L1/0078; H04L1/0083; H04L5/00; H04L5/22; H04W52/325; H04W52/327; H04W52/38; H04W52/40; H04W72/00; H04W72/04; H04W72/044; H04W72/0446; H04W72/30; H03M13/03; H03M13/05; H03M13/09; H03M13/13; H03M13/15; H03M13/151; H03M13/1515; H03M13/152; H03M13/19; H03M13/23; H03M13/2957; H04B; H04B1/00; H04B1/69; H04B1/707; H04B1/7097; H04B1/711; H04B1/7115; H04B1/712; H04B2201/00; H04B2201/69; H04B2201/707; H04B2201/70707; H04L1/0071; H04L1/08
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
164 words
In a wireless communication system, a method for processing data for transmission to a plurality of terminals, comprising: providing a plurality of frames of information bits to a buffer implementing a matrix, wherein the frames may have variable rates and each frame may include a particular number of information bits that is different from those of other frames provided to the matrix; padding the matrix with padding bits based on a particular padding scheme; and coding the plurality of frames of information bits based on a particular code to provide a plurality of parity bits, and wherein the frames of information bits and the parity bits are transmitted to the plurality of terminals; wherein one frame is provided to each row of the matrix, and wherein an unused portion of each row is padded with padding bits; wherein each row of the matrix has a size M corresponding to less than a maximum number of information bits expected to be received for a frame.
Claim 2
Dependent Claim
164 words
In a wireless communication system, a method for processing data for transmission to a plurality of terminals, comprising: providing a plurality of frames of information bits to a buffer implementing a matrix, wherein the frames may have variable rates and each frame may include a particular number of information bits that is different from those of other frames provided to the matrix; padding the matrix with padding bits based on a particular padding scheme; and coding the plurality of frames of information bits based on a particular code to provide a plurality of parity bits, and wherein the frames of information bits and the parity bits are transmitted to the plurality of terminals; wherein one frame is provided to each row of the matrix, and wherein an unused portion of each row is padded with padding bits; wherein each row of the matrix has a size M corresponding to less than a maximum number of information bits expected to be received for a frame.
Claim 3
Dependent Claim
31 words
The method of claim 1 , wherein each row of the matrix has a size M corresponding to a maximum number of information bits expected to be received for a frame.
Claim 4
Dependent Claim
31 words
The method of claim 1 , wherein each row of the matrix has a size M corresponding to an average number of information bits expected to be received for a frame.
Claim 5
Dependent Claim
18 words
The method of claim 1 , wherein the matrix includes a fixed number of frames of information bits.
Claim 6
Dependent Claim
35 words
The method of claim 4 , wherein the particular code used to code the plurality of frames in the matrix is selected based on a particular number of rows of information bits in the matrix.
Claim 7
Dependent Claim
18 words
The method of claim 1 , wherein each matrix includes a fixed number of rows of information bits.
Claim 8
Dependent Claim
35 words
The method of claim 6 , wherein the particular code used to code the plurality of frames in the matrix is selected based on a particular number of frames occupying multiple rows in the matrix.
Claim 9
Dependent Claim
36 words
The method of claim 1 , wherein the plurality of frames are provided to the matrix without padding, and wherein only an unused portion of a last row of information bits is padded with padding bits.
Claim 10
Dependent Claim
21 words
The method of claim 1 , wherein the plurality of frames are coded code column-wise in the matrix with a block.
Claim 11
Dependent Claim
15 words
The method of claim 9 , wherein the block code is a linear block code.
Claim 12
Dependent Claim
15 words
The method of claim 9 , wherein the block code is a systematic block code.
Claim 13
Dependent Claim
25 words
The method of claim 9 , wherein only parity bits in columns of the matrix having information bits are transmitted to the plurality of terminals.
Claim 14
Dependent Claim
22 words
The method of claim 1 , further comprising: transmitting information indicative of a structure of the matrix to the plurality of terminals.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2010-02-12 | 2010-08-14 | 2011-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2014-02-12 | 2014-08-14 | 2015-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2018-02-12 | 2018-08-14 | 2019-02-13 | $7700.00 | Window Closed / Lapsed |